This small bird because of its colour which is similar to the colour of a Buddhist Monk's robe is called 'Sivuru hora' - Stealer of the monk's robe, in Sinhalese. It is a very quick and shy bird.
Videos:-
http://www.youtube.com/watch?v=som3Cn9Q74s
http://www.youtube.com/watch?v=Hcb1w5kYK3g
